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Title: Near-infrared linewidth narrowing in plasmonic Fano-resonant metamaterials via tuning of multipole contributions
Authors: Lim, Wen Xiang
Han, Song
Gupta, Manoj
MacDonald, Kevin F.
Singh, Ranjan
Keywords: Linewidths
Issue Date: 2017
Source: Lim, W. X., Han, S., Gupta, M., MacDonald, K. F., & Singh, R. (2017). Near-infrared linewidth narrowing in plasmonic Fano-resonant metamaterials via tuning of multipole contributions. Applied Physics Letters, 111(6), 061104-.
Series/Report no.: Applied Physics Letters
Abstract: We report on an experimental and computational (multipole decomposition) study of Fano resonance modes in complementary near-IR plasmonic metamaterials. Resonance wavelengths and linewidths can be controlled by changing the symmetry of the unit cell so as to manipulate the balance among multipole contributions. In the present case, geometrically inverting one half of a four-slot (paired asymmetric double bar) unit cell design changes the relative magnitude of magnetic quadrupole and toroidal dipole contributions leading to the enhanced quality factor, figure of merit, and spectral tuning of the plasmonic Fano resonance.
ISSN: 0003-6951
DOI: 10.1063/1.4997423
Rights: © 2017 American Institute of Physics (AIP). This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics (AIP). The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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